1e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/* 2e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Copyright 2003-2010, VisualOn, Inc. 3e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 4e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Licensed under the Apache License, Version 2.0 (the "License"); 5e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** you may not use this file except in compliance with the License. 6e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** You may obtain a copy of the License at 7e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 8e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** http://www.apache.org/licenses/LICENSE-2.0 9e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** 10e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** Unless required by applicable law or agreed to in writing, software 11e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** distributed under the License is distributed on an "AS IS" BASIS, 12e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** See the License for the specific language governing permissions and 14e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ** limitations under the License. 15e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard */ 16e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 17e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/*********************************************************************** 18e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* File: util.c * 19e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* * 20e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* Description: Reset and Copy buffer * 21e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* * 22e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard************************************************************************/ 23e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 24e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard#include "typedef.h" 25e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard#include "basic_op.h" 26e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 27e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/*********************************************************************** 28e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* Function: Set_zero() * 29e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* Description: Set vector x[] to zero * 30e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard************************************************************************/ 31e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 32e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgardvoid Set_zero( 33e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 x[], /* (o) : vector to clear */ 34e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 L /* (i) : length of vector */ 35e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ) 36e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard{ 37e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word32 num = (Word32)L; 38e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard do{ 39e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *x++ = 0; 40e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard }while(--num !=0); 41e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard} 42e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 43e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 44e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard/********************************************************************* 45e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* Function: Copy() * 46e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* * 47e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard* Description: Copy vector x[] to y[] * 48e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard*********************************************************************/ 49e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 50e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgardvoid Copy( 51e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 x[], /* (i) : input vector */ 52e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 y[], /* (o) : output vector */ 53e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word16 L /* (i) : vector length */ 54e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard ) 55e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard{ 56e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard Word32 temp1,temp2,num; 57e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard if(L&1) 58e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard { 59e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard temp1 = *x++; 60e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *y++ = temp1; 61e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard } 62e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard num = (Word32)(L>>1); 63e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard temp1 = *x++; 64e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard temp2 = *x++; 65e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard do{ 66e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *y++ = temp1; 67e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard *y++ = temp2; 68e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard temp1 = *x++; 69e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard temp2 = *x++; 70e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard }while(--num!=0); 71e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard} 72e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 73e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 74e2e838afcf03e603a41a0455846eaf9614537c16Mans Rullgard 75